Home / 22,388.28-30,887.76-12,825.64

Finding the Fourth Proportional to 22,388.28, 30,887.76 and 12,825.64

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Solution

The fourth proportional to 22,388.28, 30,887.76 and 12,825.64 is: 17,694.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,388.28 : 30,887.76 = 12,825.64 : x
  2. Step 2: Convert to fraction form
    22,388.28/30,887.76 = 12,825.64/x
  3. Step 3: Cross multiply
    22,388.28x = 30,887.76 × 12,825.64
  4. Step 4: Simplify right side
    22,388.28x = 396,155,290.17
  5. Step 5: Solve for x
    x = 396,155,290.17/22,388.28
  6. Step 6: Final answer
    x = 17,694.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.